Your client can review, digitally "sign", and return the contract.
Video overview
There are three ways to create a Contract:
1. From Documents panel

Tap 'Workflow'
Tap 'Documents'
Tap 'New Contract'
2. From Clients panel (option 1)

Tap 'Workflow'
Tap 'Clients'
Tap '+ Create New' button
Tap 'Contract' from dropdown or
Scroll down and tap 'Create New' under Documents panel
3. From Clients panel (option 2)

Tap 'Workflow'
Tap 'Clients'
Scroll down and tap 'Create New' under Documents panel
Tap 'Create New' text link or
Tap 'New Contract' button
Add New Contract

'New Contract'
Enter 'Contract Title'
Assign to a Client
Use dropdown to select from an existing Client) or
Create a New Client
Tap 'Add Contract'
Add Contract Details

First and Last Name of your Client
Email address, only one Email Address can be entered since only a single individual can sign the contract.
Mailing Address (optional)
Your Contact Information
Enter your Contract details here
Contract Settings

Contract Title can be changed
Contract Password
Client the contract belongs to
Contract URL for viewing directly in web browser (non-editable)
Save Changes
Continue to Writing a Contract